Analysis

  • max time kernel
    151s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-12-2022 14:53

General

  • Target

    b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe

  • Size

    297KB

  • MD5

    942ff8a9066bdd69149f5412636ffd6e

  • SHA1

    a67e488f806352d53d867d479d1898a7886014e0

  • SHA256

    b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926

  • SHA512

    cc80f725ca9c9a1ede7f2684f522665998363a4ea582e729b1444047fd330c6b228573f858142b4dd9d6409e76cb90fc031a26df0e0ae3005f552489a40cf887

  • SSDEEP

    6144:8aeL3R/8NFXdE4HUEhz34IUTXLC58xQ3xDPkMo5zXbAc:tezR+Xm4HUIz/uLC58xaxDPyrbA

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe
    "C:\Users\Admin\AppData\Local\Temp\b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4584
  • C:\Users\Admin\AppData\Local\Temp\6A24.exe
    C:\Users\Admin\AppData\Local\Temp\6A24.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4576
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Qfyshwqueqdpai.tmp",Dioeeedresq
      2⤵
      • Loads dropped DLL
      PID:1636
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 536
      2⤵
      • Program crash
      PID:5016
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4576 -ip 4576
    1⤵
      PID:3384

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\6A24.exe

      Filesize

      1.0MB

      MD5

      d373cd3842e557eb94ccda95253541d9

      SHA1

      4d734ca72dbaa20ed73613dc5ed65fa1415afe5f

      SHA256

      adf1bc801b650274a3c62a61d0ba8061c7a114a6543e504da620a1ef306c0c0f

      SHA512

      cfa60f07d15f5428bfbfe52d8bdb993da4c6155d0ae50e91b70cd9c4731b7b07e01686c5368e01bb67cfe18c64a0ab39cee899f490d765abd07293bf6c2e4f22

    • C:\Users\Admin\AppData\Local\Temp\6A24.exe

      Filesize

      1.0MB

      MD5

      d373cd3842e557eb94ccda95253541d9

      SHA1

      4d734ca72dbaa20ed73613dc5ed65fa1415afe5f

      SHA256

      adf1bc801b650274a3c62a61d0ba8061c7a114a6543e504da620a1ef306c0c0f

      SHA512

      cfa60f07d15f5428bfbfe52d8bdb993da4c6155d0ae50e91b70cd9c4731b7b07e01686c5368e01bb67cfe18c64a0ab39cee899f490d765abd07293bf6c2e4f22

    • C:\Users\Admin\AppData\Local\Temp\Qfyshwqueqdpai.tmp

      Filesize

      792KB

      MD5

      822d3ead416a1a85cb96e65f65cd5ae2

      SHA1

      af32b69e2835d1cacdadb97ae6dfafccc32d1837

      SHA256

      72bdb3a06dca8458ac9aedf06785b2d7b95a19f8b9f3f8f5be2eb4744e9c5d1d

      SHA512

      48d0d61efd51fd2d8eb04d990b4a5b3ca34c916199d3b0a3b135d2089e028ee37f5145e4705fb75da77eaabbe12f8c4ea55775a41e1b1c68a90ce68b8c2a7260

    • C:\Users\Admin\AppData\Local\Temp\Qfyshwqueqdpai.tmp

      Filesize

      792KB

      MD5

      822d3ead416a1a85cb96e65f65cd5ae2

      SHA1

      af32b69e2835d1cacdadb97ae6dfafccc32d1837

      SHA256

      72bdb3a06dca8458ac9aedf06785b2d7b95a19f8b9f3f8f5be2eb4744e9c5d1d

      SHA512

      48d0d61efd51fd2d8eb04d990b4a5b3ca34c916199d3b0a3b135d2089e028ee37f5145e4705fb75da77eaabbe12f8c4ea55775a41e1b1c68a90ce68b8c2a7260

    • memory/1636-142-0x0000000000000000-mapping.dmp

    • memory/4576-141-0x0000000000400000-0x0000000000514000-memory.dmp

      Filesize

      1.1MB

    • memory/4576-136-0x0000000000000000-mapping.dmp

    • memory/4576-139-0x00000000022CC000-0x00000000023A2000-memory.dmp

      Filesize

      856KB

    • memory/4576-140-0x00000000023B0000-0x00000000024C1000-memory.dmp

      Filesize

      1.1MB

    • memory/4576-145-0x0000000000400000-0x0000000000514000-memory.dmp

      Filesize

      1.1MB

    • memory/4584-132-0x00000000006AF000-0x00000000006C5000-memory.dmp

      Filesize

      88KB

    • memory/4584-135-0x0000000000400000-0x000000000044F000-memory.dmp

      Filesize

      316KB

    • memory/4584-134-0x0000000000400000-0x000000000044F000-memory.dmp

      Filesize

      316KB

    • memory/4584-133-0x00000000004C0000-0x00000000004C9000-memory.dmp

      Filesize

      36KB